A. The number of DBWR processes increases
B. The number of ASMB processes increases
C. The number of DBWR_TO_SLAVES increases
D. The rebalancing operation in an ASM instance completes more quickly,but can result in higher I/O overhead
答案：（D）
解析：
（ASM_POWER_LIMIT specifies the maximum power on an Automatic Storage Management instance for disk rebalancing.The higher the limit,the faster rebalancing will complete.Lower values will take longer,but consume fewer processing and I/O resources.
数值大再度平衡快，不过I/O开销也大。选D）